Wordnet polsko-angielski 
                         (an electric current that flows in one direction steadily) 
direct current, DC, direct electric current 
Słownik morski polsko-angielski Iwona Kienzler
                        el. direct current
ocean permanent current
Wielki słownik medyczny polsko-angielski 2011 r., Anna Słomczewska
                        direct current, constant current, continuous current